Question: Multiple Select Question ) ) Select all that apply In constructing a confidence interval to estimate the population mean from a sample, which of the

Multiple Select Question ) ) Select all that apply In constructing a confidence interval to estimate the population mean from a sample, which of the following steps are necessary only when o is not known? Select all that apply. Find the sample standard deviation. Calculate the sample mean. Determine the desired confidence level. Find the t-value for the proper distribution, based on the sample size

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